EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT FUEL CUT OFF / RESTART RPM

   
   

   1. Start and warm up the engine.

   2. 

      *1	Fuel Injector Assembly
      *a	Sound Scope

      Increase the engine speed to at least 3000 rpm.

   3. Use a sound scope to check for injector operating sounds.

   4. When the accelerator pedal is released, check that injector operating sounds stop momentarily and then resume.

      If the result is not as specified, check the injectors, wiring and ECM.

      Standard
      Item Specified Condition Fuel injection restart rpm 1200 rpm

2. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS

   
   

   1. Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.

      Note

      
      

      • Detachment or other problems with the engine oil dipstick, filler cap, ventilation hose or other components may cause the engine to run improperly.

      • Air suction caused by disconnections, looseness or cracks in any part of the air induction system between the throttle body and cylinder head will cause an engine failure or engine malfunction.

      If any defects are found, replace parts as necessary.

3. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM

   
   

   1. Connect the GTS to the DLC3.

   2. Start the engine.

   3. Warm up the engine.

   4. Turn the GTS on.

   5. 

      Slide the clip and disconnect the fuel vapor feed hose from the purge valve (purge VSV) shown in the illustration.

   6. Enter the following menus: Powertrain / Active Test / Activate the VSV for EVAP Control.

      
      Powertrain > Engine and ECT > Active Test

      Tester Display
      Activate the VSV for Evap Control

   7. Check that vacuum occurs at the purge valve (purge VSV) port.

   8. If vacuum does not occur, check the following items.

      
      

      • Purge valve (purge VSV)

      
      

      • Clogs in the fuel vapor feed hose the connects the intake air surge tank and purge valve (purge VSV)

      
      

      • Voltage from the ECM PRG terminal

        Click here

   9. Exit Active Test mode and reconnect the fuel vapor feed hose, and slide the clip to secure it.

   10. Enter the following menus: Powertrain / Engine /Data List / EVAP Purge VSV.

       
       Powertrain > Engine and ECT > Data List

       Tester Display
       EVAP Purge VSV

   11. Warm up the engine and drive the vehicle.

   12. Confirm that the purge valve (purge VSV) opens.

       If the result is not as specified, replace the purge valve (purge VSV), wire harness or ECM.